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Commit d90f2bc

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Validate IP Address
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‎validate-ip-address.rb

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# frozen_string_literal: true
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# Runtime: 24 ms
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# Memory Usage: 9.6 MB
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def valid_ip_address(ip)
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v4 = ip.split('.')
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v6 = ip.split(':')
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if v4.size == 4 && ip.count('.') == 3
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if v4.all? { |d| d.to_i.to_s == d && d.to_i <= 255 && d.to_i >= 0 }
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'IPv4'
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else
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'Neither'
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end
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elsif v6.size == 8 && ip.count(':') == 7
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return 'Neither' unless v6.all? { |d| d.size <= 4 && !d.empty? }
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v6 = v6.map { |d| d.sub(/^[0]+/, '') }.map { |d| d == '' ? '0' : d }
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if v6.all? { |d| d.size <= 4 && d.to_i(16) >= 0 && d.upcase == d.to_i(16).to_s(16).upcase }
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'IPv6'
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else
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'Neither'
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end
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else
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'Neither'
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end
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end

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